package net.zoneland.zrdp.generator.controller;

import static net.zoneland.zrdp.generator.util.VelocityUtils.getParentMenuId;

import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import net.zoneland.zrdp.common.annotation.Log;
import net.zoneland.zrdp.common.core.controller.BaseController;
import net.zoneland.zrdp.common.core.domain.AjaxResult;
import net.zoneland.zrdp.common.core.page.TableDataInfo;
import net.zoneland.zrdp.common.core.text.Convert;
import net.zoneland.zrdp.common.enums.BusinessType;
import net.zoneland.zrdp.common.utils.JacksonUtils;
import net.zoneland.zrdp.generator.domain.GenTable;
import net.zoneland.zrdp.generator.domain.GenTableColumn;
import net.zoneland.zrdp.generator.service.IGenTableColumnService;
import net.zoneland.zrdp.generator.service.IGenTableService;

/**
 * 代码生成 操作处理
 *
 * @author zonevue
 */
@RestController
@RequestMapping("/tool/gen")
public class GenController extends BaseController {
    @Resource
    private IGenTableService genTableService;

    @Resource
    private IGenTableColumnService genTableColumnService;

    /**
     * 查询代码生成列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping("/list")
    public TableDataInfo genList(final GenTable genTable) {
        startPage();
        final List<GenTable> list = genTableService.selectGenTableList(genTable);
        return getDataTable(list);
    }

    /**
     * 修改代码生成业务
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:query')")
    @GetMapping(value = "/{tableId}")
    public AjaxResult getInfo(final @PathVariable Long tableId) throws JsonProcessingException {
        final GenTable table = genTableService.selectGenTableById(tableId);
        // 对 parentMenuId 进行处理
        if (StringUtils.isNotEmpty(table.getOptions())) {
            final JsonNode paramsNode = JacksonUtils.toJsonNode(table.getOptions());
            final String parentMenuId = getParentMenuId(paramsNode);
            table.setParentMenuId(parentMenuId);
        }
        final List<GenTable> tables = genTableService.selectGenTableAll();
        final List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(tableId);
        final Map<String, Object> map = new HashMap<>();
        map.put("info", table);
        map.put("rows", list);
        map.put("tables", tables);
        return success(map);
    }

    /**
     * 查询数据库列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping("/db/list")
    public TableDataInfo dataList(final GenTable genTable) {
        startPage();
        final List<GenTable> list = genTableService.selectDbTableList(genTable);
        return getDataTable(list);
    }

    /**
     * 查询数据表字段列表
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:list')")
    @GetMapping(value = "/column/{tableId}")
    public TableDataInfo columnList(final Long tableId) {
        final TableDataInfo dataInfo = new TableDataInfo();
        final List<GenTableColumn> list = genTableColumnService.selectGenTableColumnListByTableId(tableId);
        dataInfo.setRows(list);
        dataInfo.setTotal(list.size());
        return dataInfo;
    }

    /**
     * 导入表结构（保存）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:import')")
    @Log(title = "代码生成", businessType = BusinessType.IMPORT)
    @PostMapping("/importTable")
    public AjaxResult importTableSave(final String tables) {
        final String[] tableNames = Convert.toStrArray(tables);
        // 查询表信息
        final List<GenTable> tableList = genTableService.selectDbTableListByNames(tableNames);
        genTableService.importGenTable(tableList);
        return success();
    }

    /**
     * 修改保存代码生成业务
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
    @Log(title = "代码生成", businessType = BusinessType.UPDATE)
    @PutMapping
    public AjaxResult editSave(@Validated @RequestBody final GenTable genTable) throws JsonProcessingException {
        genTableService.validateEdit(genTable);
        genTableService.updateGenTable(genTable);
        return success();
    }

    /**
     * 删除代码生成
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:remove')")
    @Log(title = "代码生成", businessType = BusinessType.DELETE)
    @DeleteMapping("/{tableIds}")
    public AjaxResult remove(@PathVariable final Long[] tableIds) {
        genTableService.deleteGenTableByIds(tableIds);
        return success();
    }

    /**
     * 预览代码
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:preview')")
    @GetMapping("/preview/{tableId}")
    public AjaxResult preview(@PathVariable("tableId") final Long tableId) throws IOException {
        final Map<String, String> dataMap = genTableService.previewCode(tableId);
        return success(dataMap);
    }

    /**
     * 生成代码（下载方式）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/download/{tableName}")
    public void download(final HttpServletRequest request, final HttpServletResponse response,
                         @PathVariable("tableName") final String tableName) throws IOException {

        final byte[] data = genTableService.downloadCode(tableName);
        genCode(request, response, data);
    }

    /**
     * 生成代码（自定义路径）
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/genCode/{tableName}")
    public AjaxResult genCode(@PathVariable("tableName") final String tableName) throws JsonProcessingException {
        genTableService.generatorCode(tableName);
        return success();
    }

    /**
     * 同步数据库
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:edit')")
    @Log(title = "代码生成", businessType = BusinessType.UPDATE)
    @GetMapping("/synchDb/{tableName}")
    public AjaxResult synchDb(@PathVariable("tableName") final String tableName) {
        genTableService.synchDb(tableName);
        return success();
    }

    /**
     * 批量生成代码
     */
    @PreAuthorize("@ss.hasPermi('tool:gen:code')")
    @Log(title = "代码生成", businessType = BusinessType.GENCODE)
    @GetMapping("/batchGenCode")
    public void batchGenCode(final HttpServletRequest request, final HttpServletResponse response,
                             final String tables) throws IOException {

        final String[] tableNames = Convert.toStrArray(tables);
        final byte[] data = genTableService.downloadCode(tableNames);
        genCode(request, response, data);
    }

    /**
     * 生成zip文件
     */
    private void genCode(final HttpServletRequest request, final HttpServletResponse response, final byte[] data) throws IOException {
        response.reset();
        // 当请求的凭证模式是 'include' 时，响应中的 'Access-Control-Allow-Origin' 头部不能使用通配符 '*'。
        // 这意味着您的 AJAX 请求是带有凭证（例如 Cookies 或 HTTP 认证信息）的，但是服务器的响应头设置不允许这种类型的请求。
        // response.addHeader("Access-Control-Allow-Origin", "*");
        final String refererStr = request.getHeader("Referer");
        if (StringUtils.isEmpty(refererStr)) {
            response.addHeader("Access-Control-Allow-Origin", "*");
        }else {
            final URL url = new URL(refererStr);
            final int port = url.getPort();
            final String host = url.getHost() + (port == -1? "" : (":" + port));
            response.addHeader("Access-Control-Allow-Origin", url.getProtocol() + "://" + host);
        }
        response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
        response.setHeader("Content-Disposition", "attachment; filename=\"zonevue.zip\"");
        response.addHeader("Content-Length", String.valueOf(data.length));
        response.setContentType("application/octet-stream; charset=UTF-8");
        IOUtils.write(data, response.getOutputStream());
    }
}
